Journal of chromatography open最新文献

{"title":"A method for suppressing pH excursion during elution in ion-exchange chromatography","authors":"Raja Ghosh","doi":"10.1016/j.jcoa.2024.100179","DOIUrl":"10.1016/j.jcoa.2024.100179","url":null,"abstract":"<div><div>A simple method for reducing pH excursion during salt-induced elution in cation exchange chromatography is presented in this paper. Connecting a preequilibrated anion exchange cartridge in series in front of the cation exchange device just prior to the elution step significantly reduced the transient decrease in pH that is typically observed during elution. The working principle of the proposed method is hypothesized. Bind and elute chromatography experiments showed that the suppression of pH excursion during elution of a monoclonal antibody from a cation exchange chromatography device resulted in significantly sharper and narrower eluted protein peaks. Improvement in pH control during elution would not only result in better reproducibility and efficiency in separation but would also ensure greater stability of pH sensitive proteins during their purification using ion exchange chromatography.</div></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100179"},"PeriodicalIF":0.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inverse gas chromatography fruitful and credible tool for materials characterization","authors":"Adam Voelkel,&nbsp;Beata Strzemiecka,&nbsp;Kasylda Milczewska,&nbsp;Katarzyna Adamska","doi":"10.1016/j.jcoa.2024.100177","DOIUrl":"10.1016/j.jcoa.2024.100177","url":null,"abstract":"<div><div>Review contents the extensive insight into the last 10 years in the history of inverse gas chromatography (IGC). Although this technique seems to be well-known. Every year brings new proposals concerning the procedures enabling the deeper insights in the properties of the surfaces as well as the bulk of various materials. Meetings organized by the universities and commercial groups indicate the growing society of users. Different versions of IGC are most often used in following the changes of materials properties undergoing technological modifications and/or changes caused by the environment in which such material is applied.</div><div>The wide group of raw materials, minerals, pharmaceutical components, abrasive articles, cellulosic materials, bacteria biomass, ionic liquids, metal-organic frameworks (MOFs) as well as various hybrid materials were characterized by IGC. Here it is worth to indicate the properties of dentine and enamel during dental treatment or (on the other side) examination of the influence of various external parameters on the transport of gaseous compounds in different geologic materials. The advantages and challenges that arise during such experiments are presented and discussed.</div></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100177"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772391724000641/pdfft?md5=82efa4d6584d594d894dd6e6e4491a5d&pid=1-s2.0-S2772391724000641-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the presence of emerging contaminants in wastewater and seawater using automated solid-phase extraction and ultra-high-performance liquid chromatography coupled to tandem mass spectrometry","authors":"Julia Méndez-Catalán ,&nbsp;Cristina Socas-Hernández ,&nbsp;Gabriel Jiménez-Skrzypek ,&nbsp;Javier Hernández-Borges ,&nbsp;Javier González-Sálamo","doi":"10.1016/j.jcoa.2024.100178","DOIUrl":"10.1016/j.jcoa.2024.100178","url":null,"abstract":"<div><div>The presence of emerging contaminants in water constitutes one of the main ways of human exposure to them, which can cause severe effects on health. In this sense, their adequate elimination through appropriate treatments plays a fundamental role, being necessary to monitor the effluents from wastewater treatment plants, as well as the areas close to their discharge. The aim of the present work has been the development and validation of an analytical methodology to determine 15 organic contaminants of emerging concern in wastewater as well as in seawater samples using an automated solid-phase extraction system and an ultra-high-performance liquid chromatography coupled to tandem mass spectrometry instrument. Matrix-matched calibration showed good linearity with determination coefficients ≥ 0.990. Likewise, matrix effect assessment showed a significant signal suppression in almost all the analytes demonstrating the need to consider such effect for a proper quantification of the analytes. Recovery values ranged from 74.7 to 109% with relative standard deviation values ≤ 20.5% for most analytes. Regarding seawater and wastewater samples, 11 of the target analytes were detected in, at least, one sample at concentrations from below limit of quantification of the method to 217 ± 92 ng <span>l</span>^-1 in seawater and up to 2340 ± 107 ng <span>l</span>^-1 in wastewater samples.</div></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100178"},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retention factor variation on wide range of mobile phase compositions in reversed-phase high-performance liquid chromatography; a short tutorial","authors":"Victor David ,&nbsp;Serban C. Moldoveanu","doi":"10.1016/j.jcoa.2024.100176","DOIUrl":"10.1016/j.jcoa.2024.100176","url":null,"abstract":"<div><p>Mobile phase composition remains the major experimental parameter influencing the separation process in reversed-phase high-performance liquid chromatography (RP-HPLC). Its influence on the retention of solutes is explained by the Hildebrand solubility parameter and solvophobic theory, which also considers molecular characteristics of the participants in a separation process. The main empirical dependences (linear and polynomial) between the retention factor and the composition of mobile phase (retention function) are discussed taking into consideration a wide range of mobile phase compositions. Two direct chromatographic indices are resulting from these equations: the extrapolated value of retention factor for zero organic content in mobile phase composition (log <em>k_w</em>) and the solvent strength parameter (<em>S</em>), which for a linear retention function is its slope being constant over the entire mobile phase compositions. Another chromatographic index could result from the retention function for zero content of water in mobile phase, but this situation can be applied only for very hydrophobic solutes. For large domains of mobile phase composition, the retention function cannot be described by a single type of dependence. This explains the paradox of generating by extrapolation different <span><math><mrow><mi>log</mi><msub><mi>k</mi><mi>w</mi></msub></mrow></math></span>values for different organic components. For the mobile phase close to pure water the retention function is different from that at average water concentration.</p></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100176"},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277239172400063X/pdfft?md5=5d5c5e73f37f95afa9d6b9dbf9f09b2a&pid=1-s2.0-S277239172400063X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142240609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination and identification of polyphenols in wine using mass spectrometry techniques","authors":"Azamat Temerdashev ,&nbsp;Sanka N. Atapattu ,&nbsp;Geethi K. Pamunuwa","doi":"10.1016/j.jcoa.2024.100175","DOIUrl":"10.1016/j.jcoa.2024.100175","url":null,"abstract":"<div><p>Mass spectrometry is crucial for analysing physicochemical and sensory properties, including colour, astringency, taste, and flavour, predicting ageing characteristics, and addressing stability issues in wine. Polyphenols are key chemical constituents in wine that are associated with health benefits and improve circulatory conditions. Advances in mass spectrometry ionisation techniques such as matrix-assisted laser desorption and ionisation and direct analysis in real-time offer high sensitivity for identifying important polyphenolic constituents in wine. High-resolution mass spectrometry, in combination with liquid chromatography, accurately identify and quantify polyphenolic compounds, even at low concentrations, and provides the possibility for further retrospective analysis and non-targeted analysis using statistical methods of data analysis. Ambient mass spectrometry techniques such as paper spray and low-temperature plasma allow solventless analysis, determining the geographical origin, authentication, and quality control of wine samples. This review will explore the potential benefits of using mass spectrometry to identify various polyphenols and polymeric polyphenols in wine, as well as recent developments and applications. Additionally, we will discuss determining antioxidant activity and total polyphenol content in wine.</p></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100175"},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772391724000628/pdfft?md5=4975b46bd209b0c30a90e5c10aa5ba87&pid=1-s2.0-S2772391724000628-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Versatile and reliable extraction of phytosterols employing sonochemical synthesized molecularly imprinted polymer","authors":"Eleonora Oliva ,&nbsp;Sara Palmieri ,&nbsp;Francesco Della Valle ,&nbsp;Fabiola Eugelio ,&nbsp;Federico Fanti ,&nbsp;Alessandro Ciccola ,&nbsp;Manuel Sergi ,&nbsp;Michele Del Carlo ,&nbsp;Dario Compagnone","doi":"10.1016/j.jcoa.2024.100174","DOIUrl":"10.1016/j.jcoa.2024.100174","url":null,"abstract":"<div><p>Phytosterols (PSs) are bioactive compounds in the sterol family, present in numerous complex food and plant matrices in free and conjugated forms. The interest in these compounds arises for phytotherapeutic purposes, particularly for their action on cholesterol metabolism and impact on cardiovascular diseases. There is a need to develop approaches that can selectively extract target analytes and accurately identify and quantify them with high precision. This work proposed the synthesis of molecularly imprinted polymers (MIPs) for PSs with a sonochemical approach, enabling a rapid polymerization step (5 min). This proposed MIP was able to extract 8 PSs (brassicasterol, stigmastanol, campesterol, campestanol, stigmasterol, β-sitosterol, Δ⁵-avenasterol, α-spinasterol) from a wide range of plant and food matrices belonging to different classes (Brassicaceae, dried fruits and Leguminosae) and was coupled to ultra-high liquid chromatography with tandem mass spectrometry (UHPLC-MS/MS). MIP based on dispersed solid phase extraction (dSPE-MIP) and targeted analysis has proven to be particularly effective in addressing the challenges associated with the complexity of plant-derived matrices, minimising interferences. This was demonstrated by the excellent control of the matrix effect, which was within ±15 %, ensuring the robustness and reliability of the method. The identification and quantification of 8 different PSs was successfully achieved with satisfactory recovery values ranging from 65 % to 100 %. The proposed strategy offers an affordable alternative to classical methods, providing enhanced sensitivity, selectivity and overall performance.</p></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100174"},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772391724000616/pdfft?md5=9a6706b7cfd31418b2449fe0f3861a9c&pid=1-s2.0-S2772391724000616-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil lipid analysis by chromatography: A critical review of the current state in sample preparation","authors":"Gladys Arteaga-Clemente,&nbsp;María Araceli García-González,&nbsp;Mónica González-González","doi":"10.1016/j.jcoa.2024.100173","DOIUrl":"10.1016/j.jcoa.2024.100173","url":null,"abstract":"<div><p>The slow formation and renewal of soil, coupled with the multitude of services it provides to humanity, render this resource a critical component of the biosphere. The maintenance of soil structure and the accumulation of carbon, as well as the maintenance of biodiversity in soils, rely on the contribution of different fractions of soil organic matter. Despite its minor component in soils, the lipid fraction is of particular importance. Its functional diversity offers an inherent diagnostic value regarding soil organic matter, microbial biodiversity and the pedological processes to which the soil is subjected. Soil lipids are comprised of diverse groups of organic compounds, exhibiting structural variations from derivatives of complex organic components (e.g., phosphoglycerides or phospholipids, sphingomyelins, glycosphingolipids) to simpler functional classes which can combine to form other compounds such as wax esters, acylglycerols, sterols, terpenoids, and fatty acids. The analytical strategy for determining lipids in soils commonly involves extracting the lipids, then fractionating, hydrolyzing, derivatizating, identifying, and/or measuring them by chromatography. These sample treatment procedures for lipid analysis in this complex matrix are typically traditional. While sustainable sample preparation procedures are not yet fully implemented, the analysis of intact lipids by liquid chromatography coupled to mass spectrometry detection is becoming more common to avoid fractionation and derivatization. This paper reviews current sample preparation strategies for the analysis of soil lipids and presents some alternatives to the traditional methods used for soil lipid extraction, fractionation, and derivatization.</p></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100173"},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772391724000604/pdfft?md5=221f16cbb84fc155814c239193d4b953&pid=1-s2.0-S2772391724000604-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Capillary electrochromatography applied to the separation of enantiomers utilizing packed capillary columns with silica-vancomycin. A tutorial","authors":"Chiara Fanali ,&nbsp;Giovanni D'Orazio","doi":"10.1016/j.jcoa.2024.100171","DOIUrl":"10.1016/j.jcoa.2024.100171","url":null,"abstract":"<div><p>The separation and analysis of chiral compounds is an important topic in various fields such as research, pharmaceutical industry, food control, agrochemistry, biochemistry, forensics and toxicology, etc. The interest in the mentioned fields is mainly due to the fact that enantiomers could react with the chiral environment. Therefore, their separation and analysis are a challenging issue because the use of these compounds can be related to humans and animals’ lives as well as to the environment (e.g., soil and water). Their separation can be performed with different analytical techniques such as high-performance liquid chromatography, gas chromatography, supercritical fluid chromatography, and microfluidic technique (capillary electrophoresis and capillary electrochromatography-CEC). Usually the direct resolution method is applied making use of a chiral stationary phase (CSP). This tutorial is aimed at illustrating the main features of CEC using a packed capillary, e.g., employing a silica-vancomycin CSP. The synthesis of the CSP, the instrumentation of CEC coupled with UV and mass spectrometry detectors, method optimization, and two selected applications are presented and discussed.</p></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100171"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772391724000586/pdfft?md5=2aa736d2326bbe4005ea4224b753abed&pid=1-s2.0-S2772391724000586-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current trends to green food sample preparation. A review","authors":"Massimo Giuseppe De Cesaris,&nbsp;Lorenzo Antonelli,&nbsp;Elena Lucci,&nbsp;Nina Felli,&nbsp;Chiara Dal Bosco,&nbsp;Alessandra Gentili","doi":"10.1016/j.jcoa.2024.100170","DOIUrl":"10.1016/j.jcoa.2024.100170","url":null,"abstract":"<div><p>Food analysis plays an important role in preserving the integrity and quality of food. Despite these noble goals, most official methods for the analysis of nutrients (vitamins, carotenoids, etc.) antioxidants (polyphenols, etc.), and contaminants (pesticides, veterinary drugs, mycotoxins etc.) still rely on time-consuming, complex, and polluting procedures of sample preparation. To solve this discrepancy, the scientific community has frantically been working to make extraction procedures faster and safer, resorting to miniaturization, automation, low-energy consumption, and solvents/sorbents from renewable resources. This review provides an overview of the most sustainable extraction methods in food analysis, developed over the last ten years (2014–2024), including relevant examples of both liquid phase and sorbent-based techniques. Particular emphasis is placed on solutions aimed at improving the method sustainability such as smart devices, neoteric solvents, and composite sorbents, discussing the latest advancements and future trends in this sector.</p></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100170"},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772391724000574/pdfft?md5=b8cbb03283585533f4dee4727cada1ac&pid=1-s2.0-S2772391724000574-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Total arsenic and arsenic species in selected seafoods: Analysis using high-performance liquid chromatography- inductively coupled plasma mass spectrometry and health risk assessment","authors":"J.A.K.S. Jayakody ,&nbsp;E.M.R.K.B. Edirisinghe ,&nbsp;S.A. Senevirathne ,&nbsp;L. Senarathna","doi":"10.1016/j.jcoa.2024.100172","DOIUrl":"10.1016/j.jcoa.2024.100172","url":null,"abstract":"<div><p>The objective of the present study was to determine the inorganic and organic arsenic species and assess the actual risk of selected seafood produced in Sri Lanka in terms of inorganic arsenic species. A total of 80 samples, comprising 75 seafood samples and 5 freshwater samples, including mollusks, echinoderms, and crustaceans, were analyzed for their total arsenic (TA) levels and arsenic species. TA levels in seafood were determined using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) after microwave digestion. Arsenic species, including arsenobetaine (AsB), arsenite (As^III), arsenate (As^V), monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA), were selectively separated and quantified using High-Performance Liquid Chromatography (HPLC) coupled to ICP-MS, following water bath extraction with 30 mmol/L nitric acid. The TA levels in seafood ranged from 0.036 to 11.686 mg kg^-1. The spike recovery values for the five arsenic species lay within 80 % to 120 %, and the chromatographic recovery percentages ranged from 85.5 % to 123.6 %. In most samples, 100 % AsB was detected. Sea cucumber and both marine and freshwater giant river prawns showed AsB percentages of the total arsenicals at 83.2 %, 39.7 %, and 21.3 %, respectively. DMA was found in sea cucumber and marine giant river prawn at levels of 0.065 mg kg^-1 and 0.048 mg kg^-1, respectively, while MMA was not detected in any samples. As^III was found in marine water giant river prawn and freshwater giant river prawn at levels of 0.010 mg kg^-1 and 0.044 mg kg^-1, respectively. As^V was only found in marine giant river prawn at a concentration of 0.193 mg kg^-1. No other samples contained detectable levels of inorganic arsenicals. The Target Hazard Quotient (THQ) values for marine and freshwater giant river prawn were 0.90 and 0.2, respectively, indicating no significant health risks since the THQ values were &lt;1. Therefore, our study suggests that consuming the studied seafood does not pose any health risks in terms of arsenic.</p></div>","PeriodicalId":93576,"journal":{"name":"Journal of chromatography open","volume":"6 ","pages":"Article 100172"},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772391724000598/pdfft?md5=52073fe8753dcd940edd3494feb1a207&pid=1-s2.0-S2772391724000598-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142099159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}